Steam boiler or generator



gin Model.) 2 Sheets-Sheet 1.

J. MILNE. STEAM BOILER 0R GENERATOR.

No. 577,142. PatentedPeb. 16, 1897.

" ||lw|l= w/r/wssm: I INVENTIOR, @ZLyJMM 4 V( d,

ATTORNEY" (No Model.) 2 Sheets-Sheet 2.

J. MILNE. I I STEAM BOILER, OR GENERATOR. I

N0. 577,142. Patented Feb. 16, 1897.

- 7 nvvmron WITNESSES:

UNITED STATES PATENT OFFICE.

JOHN MILNE, OF BROOKLYN, NEIV YORK.

STEAM BOILER OR GENERATOR.

SPECIFICATION forming part Of Letters Patent N0. 577,142, dated February16, 1897.

Application filed June 12,1896. Serial No. 595,250- (No model.)

To all whom it may concern:

Be it known that I, JOHN MILNE, a citizen of the United States, and aresident of Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements in Steam Boilers orGenerators, of which the following is a specification.

My invention relates to certain improve holes J therein. The letter Bdesignates the nest of steam pipes or tubes, which are inclineddownwardly from the drum A to the mud-drum A and the letters 0 Ddesignate the downwardly and upwardly inclined tubes, respectively, fromthe drum A to the drum A, and G designates the nest of pipes thatconnect the drum A with the mud-drum A The adjuncts of the boiler aresubstantially of ordinary form and are composed, essentially, of theframework T, grate G at a point under the higher portion of the tubes13, fire-doors I, hangers H for supporting the drums A A, and manholesJ, disposed at divers points, as may be found expedient.

From the description it will be apparent that a continuous flow of wateris maintained through the medium of the tubes 13 O C, so as to subjectthe water to the action of the fire in the boiler continuously until thesame is converted into steam with a manifest economy of heat.

In order to increase the effect of the heat upon the generating-tube B,I have arranged partition 13 parallel to the plane thereof in such amanner to cause the heat to take a circuitous course, as indicated byarrows in the drawings, and with a View of superheating the steam I havearranged above the pipes O a partition S, with perforations b for thepassage of the hot-air gases therethrough.

In the operation of the boiler the water enters through the feed-pipe E,and thence flows through the nest of pipes O to the drum or cylinder A,thence through the nest of pipes O to the drum A thence through the nestof pipes B to the drum A, which latter practically forms thesteam-generating chamber.

From this drum or chamber A the steam ment is, as to the pipes B, thatthe water has a tendency to return to the drum A and, as

to the pipes O, that the water obtains a certain pressure by gravityfrom the feed-pipe E to the drum A, while, as to the pipes D, the waterof condensation, if anyin said pipes, is returned to the drum A.

In order to facilitate the entrance of the water into the pipe 0, Iarrange the pipe E opposite to the mouth of the pipe '0 and perforatethe pipe E in the direction of the pipe 0, which causes the water to beejected into the pipe G and thereby manifestly increase the circulationof the water.

"What I claim as new, and desire to secure by Letters Patent, is

In a steam-boiler the combination with the drums A, A, A of thedownwardly-inclined tubes B connecting the drum A to the drum A and thetwo nests of tubes 0, .D, inclined respectively downwardly and upwardlyand both connecting the drum A to the drum A, the injection-pipe Earranged at the entrance of the pipes O in the drum A, the pipes 0connecting the drum A to the drum A and the diaphragm F in the drum Aintermediate of the points of connection of the pipes O, D, thereto,partitions B and perforated partition S parallel to the plane of thepipes B, O, substantially as shown and described.

JOHN MILNE.

Witnesses:

PHILIP BOETTIGER, FRANCIS O. BOWEN.

